* In the New Mexico Senate race, former Republican congresswoman Heather Wilson is up with a new TV ad attacking Rep. Martin Heinrich (D) for opposing the Keystone XL pipeline, and calling him an “extremist.”

* The campaign of Sen. Scott Brown (R-Mass.) continued to try to tie Elizabeth Warren’s daughter to a Massachusetts effort to mail voter registration cards to welfare recipients. Warren’s daughter, Amelia Warren Tyagi, chairs the board of a group supporting the effort to distribute the registration cards in multiple states. Brown’s campaign sent out a fundraising email on the the issue earlier today.

* Crossroads GPS will pull its ad attacking North Dakota Democratic Senate nominee Heidi Heitkamp. Heitkamp flagged a statement in the spot about her spending taxpayer money on private airplanes as being “completely false.”

* House Majority PAC, SEIU and AFSCME are launching a new TV ad hitting Rep. Steve King (R-Iowa) for voting to raise his own pay but voting against raising the minimum wage. The ad is part of a $400,000 buy. King is running against former Iowa First Lady Christie Vilsack in the 4th District.